Door hanging equipment



y 933. I T. BRADY 1,907,144

DOOR HANGING EQUIPMENT Filed June 21, 1930 5 Sheets-Sheet l W M INVENTOR BY ATTORNEY May 2, 1933. T. BRADY 1,907,144

DOOR HANGING EQUIPMENT Filed June 21, 1930 3 Sheets-Sheet 2 INVENTOR ATTORNEY y 2, 933- T. BRADY 1,907,144

DOOR HANGING EQUIPMENT Filed June 21, 1930 I5 Sheet-Sheet 3 KW (B/WJZ/ INVENTOR BY ATTORNEY Patented May 2, 1933 UNITE157$TATES EiN-Ti O E} L 'rHoMAs BR ADY, OFEASI ORANGE, new JERSEY, AssreNoR To o'rits nLEvAroR A eoMrAN-Y, or new YORK, N. Y CORPORATION or NEW :rnasnY p 3 naneme mime Application filed un 21,

The invention relates to closure means and particularly to closure means for use in elevator installations; V I

WVhendoors of the sliding type-are em: 5 ployed as closures'for openings, such as open ings affording access to and from an elevator car-through: the hatchway wall of an elevator installation, it is desirable that the doors may be operated with a minimum of friction; In the event of misalinement between the door guide at the top of the door, from which the door is suspended and on' which it is guided at the top, and the supplementary guidejfor the bottom of the door, it is-desirable to compensate for such misalinement in order to lessen friction as the door is moved on its guides to cover and uncover the door opening. The present invention is directed in part to adjustable meansfor com- "2 0 pensating for misalinement of the door guides relativelyto each other.

-In elevator installations it is desirable in many. instancesto efiect the closing of the q hatchway doors as rapidly as is possible in I order to avoid unnecessary delay in the operation of the elevator system; Accordingly various types of door operating mechanisms may lie-employed to efiect theautomatic cl0s+ ing of the hatchway doors. Such door oper- 39 ating mechan'ismsin many instances impart a comparatively high closing speed to the door. Because of such rapid movement of the door, and also because the door is fre quently of appreciable weight,- it is desirable to lessen the possibility ofinjury to persons who. may enter or leave the car during the door closing operation and who may thus become exposed to the danger of being struck by the closing door or being caught between 4 the forward-edge of .thedoorand the side of the door casing. The invention is further directed to mechanism for lessening the possibility of inj uryto' persons entering or leaving the elevatorcar during the door closing operation. v A feature of the present invention resides in adjustably suspending a slidingdoor from hangers engaging a door track at the top of the door.

A second feature resides in adjusting a 1930. Serial No. 462,882. I

sliding door on a supporting rod, secured to a door'hanger which cooperates with ag'uide track to guide 'thedoor, for compensating for misalinement between the guide track and a supplementary. guide. a I A third feature-residesiin compensating for misalinement between azguide track for the-top of a door 'anda supplementary guide track for the bottom of thedoor by'adjusting the door on a supporting rod-mounted within the door and secured by'pendant bolts to at door hangerhaving-guide rollers engaging the guide track." I 1 A- fourth feature is the provision of an emergency stop for an automatically closed sliding door'to arrest the closing of the door in the event that the door in closingencoun ters an obstruction, thereby lessening *the possibility of injury to persons passing through the door opening and also the possibility of damage to the installation.

Other featuresiand advantages will become apparent from the specification, taken in connection; with the accompanying drawings wherein one embodiment of the invention-is illustrated. 5 7 7 a I In: the embodiment of the invention to'be described the hatchway door=comprises a body portion having moldings fitted over the top,bottom-and-side edgesof the door; The top and bottom moldingsjhave hollow portions extending beyond the ends 'of'the body portion of the door. Guide lugs secured to the bottom molding are arrangedto cooperate with a guide slot in the door sill for guiding the door at the bottom. rod mounted withinthe hollow portion; of the top molding supports the door for suspension from pendant bolts secured to hangers which are pro vided with rollers engaging a guide trackon thev hatchway wall above the door. The pendant bolts extendfreelythrough openings in the top. molding. and are connected to the door supporting rod. The door is adjustable on the supporting rod to compensatefor' misalinementof the door track at the top of the door. with the guideslot in the door sill, suitable nuts and washers being provided on the pendant bolts forti'ghtly connecting the door in its adjusted position to the supporting rod and hanger bolts.

The door is opened and closed through a pair of interconnected toggle levers mounted on the door and hatchway wall respectively. A door-opening'device' and a door closing device are'connected to one of the'toggle levers and are respectively operable to open and close the door. A yieldable member mounted at the forward edge of the doorcarries a brake shoe arranged to engage the door track to oppose the action of the dOor closing device and stop the door in the event the door in closing strikes an obstruction, thereby lessening the possibility of injury to persons entering or leaving the elevator car during the door closingoperation and also avoiding damageto. the installation Resilient bumpers are provided at the top and bottom of the door and a resilient buffer element is mounted on the. forward edge of the-door to lessen the possibility of injury to a person with whose body the door may'comein con tact during the closing operation.

In the drawings Figure 1 is an elevationof the hatchway side of a doorembodying the door supporting and suspension means and the emergency stop. mechanism of the present invention;

Figure 2 is a fragmentary elevation," on an enlarged scale, of'a hatchway door embody ingthedoor suspension means. andthe emer gency stop. mechanism, parts being broken away to illustrate details of construction;

Figure 31 is an end view of the parts as shown in; Figure,2;;.

. Figure 4 is, an; enlarged: sectional view, taken along the. line-H of Figure 2',.showing the arrangement of the emergencystop mechanism, on thenforward edge of the door;-

Figure 5 is an enlarged sectional view,

taken along the line 5.5,,of Figure 2, showing'the arrangement of the pendant bolts andthedoor supportingrod; and 1 Figure 6 is a sectional view, taken. along therline 6-6 of Figure 2-, showing the guides on the bottom molding; and the guide slot in the door sill. V V Referring toFigures l, 2. and 3, the numeral21 designates one wall of anelevatorhatchway provided with a. door opening 22 for affolding access to and from an elevator car in the hatchway when the car is positioned at the landing at which the opening is provided. A door casing 23 is mounted within the opening 22,

A hatchway door, designated as a whole by the numeral 24, is suspended'from hangers 25 provided with guide rollers 26 and retainer members 29 for cooperating with a track 27' to guide the door in its movement transversely of the' door opening. The track 27 is mounted on supports 28 secured to a plate 3.0.011 the hatchway wall above the door opening and the door; 2% is suspended from the hangers 25 by pendant bolts 31, as will be more fully described hereinafter.

A toggle lever 32 is pivotally mounted on a bracket 33 secured to the rear edge of the door and is connected to a toggle lever 34: pivotally mounted on a bracket 35 fastened to the hatchway wall. The toggle. levers assume straight line position, when the door is closed, to lock the door and prevent opening thereof fromthe corridor. A fluid pressure operated dooropening device 36 is mounted on the hatchway wall and its piston rod 37 connectedby a link 38 to an extension 40 of toggle lever 3. L. Adoor closing and checking device 41 which may be of the type described; in applicants prior- P-atent. 1:,685Q issued September 25,1928, is. mounted on the hatchway wall and the pistoni rod: 4:2 thereo is alsoconnected to-the extension ofthe toggle lever 34. The arrangement. issuch that energy is .stored in aspring within the casing ofthedevice 41 as the door. is, opened,,upon the admission of pressure to the piston. cylinder' of device 363 tov open the door, and the tensioned spring acts, upon releasingthe supply of fluid pressure to the device 36, to move the door to closed position. 1

7 Referring also to Figures 4, 5 and 6 in the embodiment illustrated the hatchway door comprises a body portion 4:3 of wood covered on opposite sides with metallic panels 44. Moldings are fitted over the edges of the body portion ot the door to provide a rigid and rugged door construction. The molding-sat the top and bottom of'the-door,designated14=5 and a6 respectively, are formed with hollow port-ions extending beyond thebody portion of the door. The bottom molding 46zis provided with guide lugs etg'for cooperating with a guide slotj50 in the door sill 51 to guide the door. at'the bottom.

imam-much as thearrangement of each ofthc pendan-t'bolts 3 1 tors'uspen-dingthe door from the, hangers is the same only the arrangement of single pendant bolt will. be described indetail, Referring to Figures 2 and 5 in particiilar, the portion 52 of the hanger 25i-s prqvided with a slot 53. The shank of a pendant bolt 3]; extends freely through the slot- 53, the underside of the head of the-bolt resting on the portion 52' at' the sides of the slot. Theshank of the bolt is threaded to receive a nut 5& for engagingthe underside of the portion 52 of-the hanger so that the pendant bolt may be secured to the hanger.

' The pend ant'bolt 31 extends freely through opening 55 in the portion 47 of the top molding 455 and is threaded into a cylindrical rod 56 within the molding for suspending the 1 door from the hanger.- The rod 56 is not directly fastened to the door 24;: or molding &5 but is freely mounted in theportion H oi the molding. the underside of the portion ll of as molding engaging the rod 56 so that the door is supported on the rod-which in turn is suspended from the hanger 25' by'the pendantbolt 31.- A washer-57, the-underside of which conforms to the contour of the molding, and a nut 58 are provided on thependant belt, for tightly connecting the door to the rod 56 and thus to the pendant bolt and hanger. An opening is provided in the hanger at the end of the slot 53to provide clearance for the head of pendant bolt 31 in the event the bolt is secured to the hanger near the endof the slot and also for'permitting-the door and hanger to be assembled by passing the head of the bolt through the opening 60 and'securing thependant bolt to the hanger b nut 54. v

Referringto Figures 2 and 6, thebody 43 of the door and panels 44 are cutaway near theft'opand bottom of the forward edge of the door to form pockets 61. A bracket 62 is mounted Within each pocket 61, being secured to the side molding66 by fastening devices 63. Each bracket 62 supports a stud 64 on which a link 65is pivotally mounted. The links 65 extend through openings formed in the edge of the side molding 66, the openings being in registration. with the ends of the pockets. The other end of each link is pivotally connected to a bracket 67 mounted on the base of a channel member 68. Thus, the channel 68 is pivotally supported at the forward edge of the door, the sides of channel 68 overlapping part of the side molding 66. A member 7 0 is secured to the channel 68 near the top of the door. Member 70 extends beyond chann'e168, and also above the 'top of door 24, and terminates in a bifurcated end supportingfa stud 71. A brake shoe 72 mounted'on the stud is arranged tocooperate withthe underside-ofthe door track 27, as will be described hereafter. The brake shoe is formed With side portions 73 overlapping, but out ofcontact with, the front and back of the track. A suitable brake lining 74 is secured as it to-the brake shoe within theside portions thereof. Shims 75 may be inserted between the brake liningand the shoe for securing the desired normal clearance between the lining ofthe brake shoe and the underside of. the door track. -Member 70 has an extension 76 forming a stop arranged to engage the top cf the door for limiting the downward movementor channel 68 and fordetermining the normal position of the channel.

- A resilient member. is secured to the channel 68 ,atthe forward edge of the door for lessening: the possibility of injury to persons withwhose body the door may come incontact during the closing operation of the door. In the embodiment illustrated the resilient member comprisesa length of hollow rubber tubingf78 through which achannel 80extend s', f astening devices 81 being provided to secure the tubing to the back of channel 68 carried by the door. Solid rubber bumpers 82 are secured to channel 68 at thetop and bottom of the door and are mounted in fitted relation to'the tubing 78. Stops 83 providedw'ith resilient bumpers 84 are positioned to be engaged by'the rear edge of the door to limit the opening movement of the door.

' The door'is'assembled' with the pendant bolt '31, carrying the nuts 54, and 58 and washers 57 thereon, threaded-into'the rod 56 within the top molding 45. In mounting the door the'guide lugs 48 on the'bottom of the door are inserted in the guide slot50 in the door sill 51 and the head of the boltsl is inserted through the opening 60 at the end of the slot 53 in the hanger 25. Thus the door, supported by'the rod 56, issuspended from the hanger 25. The pendant bolt 31 is adjusted in the rod 56ito raise or-lower the door and thus obtain the desired clearance at the bottom of the door. a The nut 54 may then be turned into binding-contact with theunderside of'the portion 52ofthe hanger", thus se; curing the pendant bolt to thehanger; The door may beswung, toward oraway fro'm the door opening," about the rod 56 to compensate for inaccurate positioning of the. door track 27 with relation tothe guide slot 50, or vice versa, so that the guide lugs 48 are movable in guide slot 50 to'guide' the door at the bottom without undue friction. When the desired adjustment of the door on its supporting'rod 56-is obtained, the nut-58 sure is admitted to the piston cylinder of the device 36 for opening the door. The admission" of fluid to the piston cylinder'of the device 36 may be effected automatically upon arrival'of thecar or maybe under the control of the car attendant. In either caise,the admission of fluid underpressureto thepiston cylinder results in movement of piston rod 37 which acts through link 38- to move toggle lever 34 upwardly about bracket 33, thus breaking the toggle levers to unlock the door and operating them to open the door. As the door is opened energy is stored in the spring within the casing of door closing device 41 for returning the door to closed position. The opening movement of the door is limited by the engagement of the rear edge of the "door with the resilient bumpers 84 on the stops 83 and the supply of fluid under pressure to the devices 36 is continued as long as it is desired to maintain the door in open positioin I n i When it is desired to close the door, the sup ply offluidunderpressnre to the device36 is cut ofl The spring of door closing device i1 then acts through the piston rod 42thereof to rock; the-toggle lever 34;. downwardly thus moving the door-towardclosed position. If, as the door iisclosed, the forward edge of the deer encounters an obstructiomsuch as he dy or fe ts of a p r n en eri g r leaving the car, the movement of the channel 68. in thedoo closing direction with the door is terminated by the resistance-presented by the obstruction. The closing device 41 continues to exert force through toggle levers 32- and; 3a to close the door and .as a, result the channel 68 is, rocked upwardly about the pivots of; the links 65 on the brackets 62 mounted; in the body of the door. Thus, the brake shoe 72 is moved upwardly with channel 68 and is'forced into. contact. with the underside of door track 2? to oppose the: ClQS'. ingo the. do r y the evi e Th pr ng ofthe deviceil continues toact to attempt to close the door and consequently the brake shoe; is pressed against the underside of; track 27, with greater; and greater force until the brake shoe overcomes the. closing-device and stops the door. i

When the obstruction is lfemOyed the channel 68 gravitates downwardly about the piv-. otsofthe links 65.. until the stop. 76 engages the top of the door, thus moving the brake shoe Z21fromengagement with track 27 and permitting the closing device 41 to move the door to fullyclosed and locked position. The door'is checked and thus brought to rest eas-. ily and quietly, in the latter part of its clos: ing moyemenhby checking mechanism which ispart of the device 41.

litv is to be noted that the door which is supported the rod within its top molding may be swung toward; or away from the door opening to. compensate for misalinement between the door track; at the top of the door and the guide slot at the bottom of the door and then tightly secured to the rod in its. ad-

jlusted position. Thus, such misalinementsas exist may be compensated for in order to lessen friction between the guide lugs and the guide slot, without bending-the hanger. or in .1. any way-altering'the mounting of the hanger on the guide track. As. a result, the position of the rollersoffthe hanger on the guide track isuncl angedjby adjustments to compensate formisalinement of the door track andguide slot and; the hanger is movable. along the door track-to guide the door with a minimum of friction. I

It: is also to, be noted that the resilient bumper 78 carried by the channel 68 lessens the possibility ofainjury to persons who may be struck by: the closing-door. The yielding movement of the channel 68 upon encountering an obstruction causesthe brake shoe 72 to engage track 27 to stop the doorby-oppos. ing the action. Of closing device 441 and thus furtherlessens the possibility of injury to persons, tardily entering or leaving the car. The ac io of hanne and ra ho 72 also. lessens the possibility of such injury as might be causedby the application of force to the body of aperson struckby the door and a s ie p sibili y o j ry as a re lt of. a person being pressed between closing edge of the door and: theside of the'door casing'by the force applied'to. the door by the closing device. v

Although the door; has been described as supported by a rod mounted within; a portion of the top molding, which extends beyond the top ot the body ot the door, it is to be understood that the rod maybe mounted within a hollow member, otherthan amolding, secured to. the top of the. door, In the event, that the door is of hollow frame construction, the rod may, for example, be with? in the door and engaged by the underside of the top. of the door to support the door. It is also; to be understood that the. supporting member by means of which the. door is sup; portedand suspended from the pendant bolts and hangers. may be'of other desired shapes or forms. r

Solid or hollow resilient members, similar to. thetubing 78, may also be secured to the rear and bottom edges of the door, if desired.

lVith such arrangementthe door. when closed would be substantially light and air tight;

As many changes could be made in the above construction and many apparently widely difierent embodiments of this inven: tioncou-ld be made. without departing from the scope thereof,- it is intended that all inattertontained in the-above description or shownin the accompanying drawings;- shall be interpreted as illustrative, and notv in a limiting: sense. e

lVhat is-claimed-is: H'anging means; for a sliding door sliding on a track above said door-and guided a runway in the door sill at thelower edge 0t said door, said hanging means comprise ing; -a plurality of hangers each provided with a supporting.'rollenengagingthe top of said track and each provided with two aperw tures for accommodating pendant bolts; a pair of pendant bolts for each hanger one rotatably positioned in each'of said apertures; means for supporting each pair of pendantbolts from its corresponding hanger and forv securing such bolts against rotation; a moulding extending along the top of said door for the entirewidth thereof, saidmoul'ding having a hollow half-round section beyond the top edge of said door and having a clearance hole in the top of said hollow section for each of said pendant bolts; a cylin; drical rod positioned within said hollow-sec: n o sa weld g nd x endi g, he QI i FQ d h 1. r, ea of sa pen ant bolts being threaded into said cylindrical rod; and a Washer and lock nut for each pendant bolt for gripping said hollow sec tion of said moulding between said cylindrical rod and said Washers.

In testimony whereof, I have signed my name to this speeification.

THOMAS BRADY: 

